Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60026288512b2ef…

MALICIOUS

PDF

52.3 KB Created: 2020-08-22 22:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acfdb70724bf2fca5939d4ebc6697b85 SHA-1: 42f3b90fb1768104c7c8eab3907ef8dbee94c3cc SHA-256: b60026288512b2ef695014918fb0217362e064024ba405d43c480b9860843036
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which are disguised as PDF files hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=merit+english+to+amharic+dictionary+pdf', points to a known malicious redirector. The document body is heavily obfuscated and contains junk data, but the presence of the malicious URL and the link farm heuristic strongly indicate a phishing or redirection attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=merit+english+to+amharic+dictionary+pdf
    • http://vepimu.townsendoutdoors.net/uploads/1/3/1/3/131383652/kejasorileloniseto.pdf
    • http://files.burrowsmemorial.org/uploads/1/3/1/6/131637853/2679574.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/zarabesedagaxadikotulubu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/kuzenibemizivijud.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/how_to_work_cctv_camera_system.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/98743716288.pdf
    • https://cdn.shopify.com/s/files/1/0431/4677/2646/files/xibok.pdf
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/89168192591.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/garojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7819/6129/files/rotejomufojujogelunodotup.pdf
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/28005888521.pdf
    • https://cdn.shopify.com/s/files/1/0434/8428/3033/files/36926992680.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20136550696.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080c1.bin
2c9a52c4df336e99d51e4ffbed99791b6aa670fbe31a51c966249f63d6ac0c6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C1 5464 bytes
font_01_sfnt_off00009339.bin
03d46b15b47f5bf9ba3f97b65116512c2473bff5730e5fd66cefb3b65cf039e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9339 10240 bytes
font_02_sfnt_off0000b652.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB652 4324 bytes

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